Multichambered gas burner



P 1950 o. c. KUEHNE 2,521,584

MULTICHAMBERED GAS BURNER Filed Dec. 17, 1945 2 Sheets-Sheet 1 FIG. I

P 1950 o. c. KUEHNE 2,521,584

MPLTICHAMBERED GAS BURNER Filed Dec. 17, 1945 2 Sheets-Sheet 2 I 4 I 2 e I7 r7 I FIG. 3

' O. C. KUEHNE Patented Sept; 5, 1950 UNITED STAT ES PATEN OFFICE 'MULTICHAMBERED GAS BURNER Oscar C. Kuehne, San Antonio, Tex.

Application December 17, 1945', Serial No. 635,540

This invention relates to fuel burners and more particularly to a fuel burner which is formed with a cast iron head having a plurality of mixing chambers therein within which the fuel is discharged from a plurality of jet openings in the multi-jet nozzle.

An object of this invention is to permit ease and flexibility of assembly of a plurality of connected burners in order to conform to various types or shapes of heating equipment.

A further object of this invention is to provide each burner head with an individual multijet nozzle, so designed as to permit individual jet openings for each mixing chamber, thereby resulting in uniform heat intensity.

A further object of this invention is to provide a burner of this type wherein the multi-jet nozzle is so designed to cause fuel to enter mixing chamber at the proper angle and location with the correct velocity to insure maximum combustion, and requiring no adjustment.

A further object of this invention is to provide a burner of this type wherein the burner head and multi-jet nozzle are so designed and assembled as to permit a straight line flow of air augmented by the fact that the force of the fuel entering the mixing chambers will serve to draw in the air from the bottom of the burner through the mixing chamber.

A further object of this invention is to provide a burner of this type having a multi-jet nozzle of non-corrosive material with jet openings in a protected position unafiected by settling foreign matter and corrosive action of flame thereby insuring maximum efficiency over a longer period of operation.

A further object of this invention is to provide a burner of this kind which may be used for gas, such as natural gas, or the like, and which will provide a maximum of heat generating means.

With the foregoing objects in view, and others which may hereinafter appear, I have invented the device shown in the accompanying illustrations wherein are shown embodiments of this invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is a plan view of a burner assembly constructed according to an embodiment of this invention.

Figure 2 is a fragmentary bottom plan view of one of the burner heads.

Figure 3 is a sectional view taken on the line 3--3 of Figure 1.

Figure 4 is a perspective view, partly broken away and in section, of one of the burner heads.

Referring to the drawings, the numeral I5 des- 1 Claim. (Cl. 158F106.)

r .1. thereare-a pluralit of burners connected together for positioning in th lower portion of a boiler or heating equipment.

Each burner l5 comprises a burner head l6 which is formed with a plurality of circumferentially and equally spaced apart mixing chambers I! which taper upwardly with the larger end thereof lowermost. The mixing chambers IT, at the lower ends are of substantially triangular configurations as shown in Figure 2, and taper upwardly and terminate in a round discharge opening l8.

The several mixing chambers I! are separated from each other by means of ribs I9 which, at their inner ends, are bevelled or tapered, as indicated at 20.

The central portion of the body I6 is formed with a depression or recess 2| and anupwardly extending boss 22 is formed integralv with the bottom wall 23 of the recess 2!. The boss 22 is formed with a central opening 24 through which the threaded stud 25 of a multi-jet nozzle, generally designated as 26, is adapted to engage. The nozzle 26 includes a cylindrical side wall 21 having extending upwardly therefrom a frustoconical wall 28 provided with a plurality of jet openings 29.

The nozzle 26 includes a flat top wall 30 which is engageable on a seat 3| formed at the inner end portions of the ribs IS. The threaded stud 25 extends upwardly from the center of the top wall 3! and is adapted to be secured in the opening 24 by means of a nut 32. The openings 29 are upwardly directed for discharging fuel, such as gas or the like into the large lower end portion of each mixing chamber I! so that the airy entering the bottom of the burner head 16 will be forced upwardly for mixture as it moves upwardly through the chamber I! with the fuel from the jet openings 29. The nozzle 26 also includes a bottom wall 33 formed with a threaded boss 34 with which an L 35 is adapted to be connected The several burner heads receive their fuel from a multi-port connector 36 which is connected to a .fuel supply pipe 31 by means of an L 38.

As shown in Figure 3, certain ones of the pipe fittings connecting the nipples 39 with the nozzles 26, are T-shaped, as indicated by the numeral 39, and supporting legs 40 are threaded-into the lower branch 4| of the T 39.

The burner heads may be formed from cast material and the same is true of the nozzles and as the fuel is burned at a point spaced fromthe ejection of the fuel from the jet openingsthese openings or jets will not readily become corroded.

I claim:

A burner comprising an annular burner head having a centrally disposed recess on the under side thereof, said recess being provided with a ignates generally a burner and, as shown in F gdownwardly diverging wall, a shoulder forming an annular seat about said recess intermediate the top and bottom thereof, a fuel nozzle havin an upwardly converging side wall provided with spaced fuel outlets and a. top wall upon which said shoulder is adapted to seat whereby the lower portion of the diverging side wall of said recess is juxtaposed with the converging side wall of said nozzle, said head being provided with a plurality of circumferentially spaced, upwardly tapered, axially disposed bores extending therethrough, each bore having an outwardly flared lower portion communicating with said recess adjacent one of said fuel outlets whereby fuel is emitted from each of said outlets into one of said bores, the latter forming a mixing chamber.

OSCAR C. KUEHNE.

4 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,239,681 English Sept. 11, 1917 1,481,189 Daniels Jan. 15, 1924 1,539,093 Mettler May 26, 1925 1,695,548 Hall et a1 Dec. 18, 1928 1,801,946 Bastian Apr. 21, 1931 2,296,475 Martois Sept. 22, 1942 

